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6 Cards in this Set
- Front
- Back
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The rule of F's
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flesh-whole muscle
fasicles-bundles fibers-cell of muscle myofibrils-sarcomere filaments-myosin/actin |
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steps to a muscle contraction
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action potential travels down t-tubule to t. cisternae of SR
calcium released from SR calcium binds to troponin tropomysin rotates to expose binding site for myosin myosin binds to actin myosin pulls actin atp releases myosin and resets calcum returns to sr by active transport tropo covers binding sights actin goes back |
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white fibers
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short term muscles
anareobic fast twitch bigger than red little blood flow few mitochondria |
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red fibers
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slow twitch- endurance
lots of mitochondria aerobic |
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recruitment
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add motor units to task to increase force
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summation
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add together contractions of muscle
brain keeps yelling GO! holds position |
